National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Weed management in high density orchards is a critical component for successful crop production. The present investigation was conducted in the Experimental fields of Division of Fruit Science, SKUAST, Kashmir during the year 2018 with the aim of standardizing the effect of various weed management strategies on soil moisture and nutrient availability. One year old trees of exotic apple cv. “Elstar” grafted on M-9 T337 rootstock, introduced by SKUAST-Kashmir from Holland in March 2017, were selected for experimentation. The thirteen treatments used were replicated thrice in Factorial Randomized Complete Block Design. Different weed management practices significantly influenced the soil temperature at 0-15 cm depth, highest being recorded under inorganic polyethylene mulches and lowest among organic mulches. Maximum mean soil temperature of 25.63 â°C was recorded under T3 (Unpunched black polyethylene mulch) which was statistically at par with T2 (Punched black polyethylene mulch) (25.59 â°C) and T4 (Bi-colour polyethylene mulch) (25.38 â°C). Minimum soil temperature (18.48 â°C) was recorded under paddy straw mulch (T5). Also the available nitrogen content of the soil was markedly influenced by various weed management practices during the year of study. Maximum available nitrogen content (323.78 Kg ha-1) was recorded under paddy straw mulch (T5) which was followed by T12 (Oxyfluorfen followed by Glufosinate ammonium) (319.89 Kg ha-1) and T11 (Oxyfluorfen followed by Glyphosate) (316.83 Kg ha-1). Minimum available nitrogen content (282.11 Kg ha-1) was recorded under unweeded control. Available phosphorus content in soil was highest (22.22 Kg ha-1) under paddy straw mulch (T5) whereas minimum phosphorus content (19.12 Kg ha-1) was recorded under unweeded control. Available potassium content was maximum (232.22 Kg ha-1) in paddy straw mulch (T5). Minimum potassium status (201.44 Kg ha-1) in soil was recorded under unweeded control.
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